<!DOCTYPE html>
<html lang='en'>

<head>
    <meta charset='UTF-8'>
    <meta http-equiv='X-UA-Compatible' content='IE=edge'>
    <meta name='viewport' content='width=device-width, initial-scale=1.0'>
    <title>Document</title>
    <script src='../vue.js'></script>
</head>

<body>
    <div id='app'>
        <form action="###">
            <!-- 单选框无论个数据有多少个，都是单选，所以data中只需要用一个字符串类型保存当前的value值即可 -->
            <input type="radio" name="sex" value="男" v-model="sex">男
            <input type="radio" name="sex" value="女" v-model="sex">女
            <input type="radio" name="sex" value="未知" v-model="sex">未知

        </form>
    </div>
    <script>
        Vue.config.productionTip = false;
        const vm = new Vue({
            el: '#app',
            data() {
                return {
                    sex:""
                }
            }
        })
    </script>
</body>

</html>